package com.itheima.edu.info.manager.controller;

import com.itheima.edu.info.manager.domain.Student;
import com.itheima.edu.info.manager.service.StudentService;

import java.util.Scanner;

public class StudentController {
    StudentService studentService = new StudentService();
    Scanner sc = new Scanner(System.in);

    public void start() {
        while (true) {
            System.out.println("--------欢迎来到 <学生> 管理系统--------");
            System.out.println("请输入您的选择: 1.添加学生  2.删除学生  3.修改学生  4.查看学生  5.退出");
            String choice = sc.next();
            switch (choice) {
                case "1":
//                    System.out.println("添加");
                    addStudent();
                    break;
                case "2":
//                    System.out.println("删除");
                    deleteStudentById();
                    break;
                case "3":
//                    System.out.println("修改");
                    updateStudentById();
                    break;
                case "4":
//                    System.out.println("查看");
                    showStudent();
                    break;
                case "5":
                    System.out.println("退出");
                    return;
                default:
                    System.out.println("您的输入有误,请重新输入");
                    break;
            }
        }
    }

    public void updateStudentById() {
        System.out.println("请输入要修改的id");
        String id = sc.next();
        boolean flag = studentService.isExists(id);
        if (flag) {
            System.out.println("请输入姓名");
            String name = sc.next();
            System.out.println("请输入年龄");
            String age = sc.next();
            System.out.println("请输入生日");
            String birthday = sc.next();
            Student stu = new Student(id, name, age, birthday);
            studentService.updateStudentById(stu);
            System.out.println("修改成功");
        } else {
            System.out.println("您输入的id不存在");
        }
    }

    public void deleteStudentById() {
        System.out.println("请输入您要删除的id");
        String id = sc.next();
        boolean flag = studentService.isExists(id);
        if (flag) {
            studentService.deleteStudentById(id);
            System.out.println("删除成功");
        } else {
            System.out.println("无此id");
        }
    }

    public void showStudent() {
        Student[] stus = studentService.findAllStudent();
        if (stus == null) {
            System.out.println("查无信息");
            return;
        }

        System.out.println("学号\t\t姓名\t年龄\t生日");
        for (int i = 0; i < stus.length; i++) {
            Student stu = stus[i];
            if (stu != null) {
                System.out.println(stu.getId() + "\t" + stu.getName() + "\t" + stu.getAge() + "\t\t" + stu.getBrithday());
            }
        }
    }

    public void addStudent() {

        String id;
        while (true) {
            System.out.println("请输入学生id");
            id = sc.next();
            boolean flag = studentService.isExists(id);
            if (flag) {
                System.out.println("您的输入有误,请重新输入");
            } else {
                break;
            }
        }
        System.out.println("请输入学生姓名");
        String name = sc.next();
        System.out.println("请输入学生年龄");
        String age = sc.next();
        System.out.println("请输入学生生日");
        String birthday = sc.next();
        Student stu = new Student(id, name, age, birthday);
        boolean result = studentService.addStudent(stu);
        if (result) {
            System.out.println("添加成功");
        } else {
            System.out.println("添加失败");
        }
    }
}
